Many areas have noise ordinances. I am president of my Homeowner's Association and my advice is to check to see if there's an ordinance in your area and if there is, call the police every time it's violated.
I've learned from fielding noise complaints in my own community that asking people to be quiet doesn't work most of the time. They usually know they are being loud and think because it's "their house" they can disturb their neighbors without care. Most places have noise ordinances and they will enforce them if the police are called. It also provides documentation if you need it later.
What had to be done in my community with a noisy resident was the police were called EACH AND EVERY TIME there was a violation of the noise ordinance, without exception. (We advised the people around the noise makers not to confront them, because then the police calls can be tied to you and possibly create more harassment.)
Eventually the noisy people moved out- and complained that THEY were being harassed by the noise complaints.

Funny thing is, after they moved, no one has complained about the new people and they've been there for two years.